Type SHD-GC Three-Conductor Round Portable Power Cable, TPU Jacket 25kV
Understanding Type SHD-GC 25kV Three-Conductor Round Portable Power Cable with TPU Jacket
Type SHD-GC Three-Conductor Round Portable Power Cable, TPU Jacket 25kV
Applications
These heavy duty cables are designed for heavy mobile equipment such as drag lines, shovels, dredges, drills and for power feeders.
Standards
ICEA S-75-381/NEMA WC 58
ASTM B 172
ASTM B 33
CAN/CSA C22.2 No. 96
Construction
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Conductors | Stranded annealed tinned copper conductor. |
|---|---|
Conductor Shield | Conducting layer. |
Insulation | Ethylene Propylene Rubber (EPR). |
Insulation Shield | Conducting tape + Tinned copper/textile braid. |
Ground Check Conductor | Tinned copper with a yellow polypropylene insulation. |
Grounding Conductor | Tinned copper conductor. |
Jacket | Thermoplastic Polyurethane (TPU) Jacket, black. |
Options
Other jacket materials such as CPE/CSP/PCP/NBR/PVC are available upon request.
Two-layer jacket with reinforcing fibre between the two layers can be offered as an option.
Mechanical and Thermal Properties
Minimum Bending Radius | 8×OD |
|---|---|
Maximum Conductor Operating Temperature | +90℃ |
Dimensions and Weight
Construction | No. of Strands | Grounding Conductor Size | Ground Check Conductor Size | Nominal Insulation Thickness | Nominal Jacket Thickness | Nominal Overall Diameter Height×Width | Nominal Weight | Ampacity | ||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
No. of cores × AWG/kcmil | - | AWG/kcmil | AWG/kcmil | inch | mm | inch | mm | inch | mm | lbs/kft | kg/km | A |
3×1 | 259 | 5 | 8 | 0.260 | 6.6 | 0.265 | 6.7 | 2.95 | 74.9 | 4410 | 6561 | 191 |
3×1/0 | 266 | 4 | 8 | 0.260 | 6.6 | 0.265 | 6.7 | 3.05 | 77.5 | 4866 | 7240 | 218 |
3×2/0 | 323 | 3 | 8 | 0.260 | 6.6 | 0.280 | 7.1 | 3.20 | 81.3 | 5560 | 8272 | 249 |
3×3/0 | 418 | 2 | 8 | 0.260 | 6.6 | 0.280 | 7.1 | 3.33 | 84.6 | 6192 | 9213 | 286 |
3×4/0 | 532 | 1 | 8 | 0.260 | 6.6 | 0.295 | 7.5 | 3.50 | 88.9 | 7110 | 10578 | 327 |
Mining, heavy industry, and large-scale infrastructure development rely on robust and highly reliable power distribution systems. In these demanding environments, conventional cables often fail to meet the mechanical, thermal, and electrical stresses that equipment must endure. This is where Type SHD-GC (Shielded, Grounded, Ground-Check) 25kV three-conductor round portable power cables with TPU jackets come into play.
Widely used in mining operations, draglines, dredges, shovels, and drilling rigs, SHD-GC cables have become an industry standard in North America and are increasingly relevant in South Africa’s mining sector, where both deep-level underground mines and large open-pit operations require cables capable of withstanding abrasion, extreme bending, moisture, and chemical exposure.
What is a Type SHD-GC Cable?
SHD: Shielded for high-voltage applications.
G: Includes grounding conductors.
GC: Features a ground-check conductor to monitor electrical continuity and detect faults.
Together, these elements make SHD-GC cables safer, more durable, and more reliable than general-purpose mining cables.
Benefits of SHD-GC 25kV Cables
Enhanced Safety
Ground and ground-check conductors continuously monitor electrical safety.
Faults are detected quickly, preventing hazardous failures.
Durability in Harsh Conditions
TPU jackets resist oils, chemicals, moisture, and mechanical wear.
Ideal for abrasive mining environments where cables are dragged across rock.
Flexibility and Portability
Designed for reel and unreel operations on mobile mining equipment.
High Voltage Performance
Capable of transmitting power efficiently at 25kV.
Suitable for long runs and large equipment.
Compliance with International Standards
ICEA S-75-381 / NEMA WC 58
ASTM B172 & B33
CAN/CSA C22.2 No. 96
Usage Scenarios
Mining Operations
Powering draglines, electric shovels, and drills.
Long trailing cable systems in South Africa’s platinum and coal mines.
Construction Projects
Temporary high-voltage power for large construction machinery.
Ports and Dredging
Used in dredges and ship-loading systems requiring mobility.
Tunneling
Power supply to boring machines and conveyor systems.
Frequently Asked Questions (FAQ)
Q1. What does SHD-GC mean in mining cables?
It stands for Shielded, Grounded, and Ground-Check, describing the safety and monitoring features of the cable.
Q2. Why choose TPU jackets over PVC or CPE?
TPU jackets provide superior abrasion resistance, flexibility, and chemical resistance, making them ideal for harsh mining environments.
Q3. Can SHD-GC cables be repaired after damage?
Yes, but only using approved splice kits and performed by trained personnel to maintain safety standards.
Q4. What is the typical lifespan of SHD-GC cables in South African mines?
Depending on usage, 3–7 years, with TPU jackets offering the longer lifespan.
Q5. Are SHD-GC cables suitable for underground mines?
Yes. Their ground-check conductor is particularly useful in underground mining where electrical hazards are higher.
The Type SHD-GC 25kV three-conductor round portable power cable with TPU jacket represents a technically advanced, durable, and safe solution for powering heavy mining and industrial equipment. Its combination of shielding, grounding, ground-check monitoring, and robust TPU jackets makes it well-suited to the harsh conditions of South Africa’s mining industry.
